void func1(int x, int y, int z) {
    x = 1;
}

void func2(int* x, int* y, int* z) {
    *x = 1;
}

int a = 1;
int b = 2;
int c = 3;

int main() {
    func1(a, b, c);
    func2(&a, &b, &c);
}
